Centenary Lecture. Reactivities of carbon disulphide, carbon dioxide, and carbonyl sulphide towards some transition-metal systems

1982 ◽  
Vol 11 (1) ◽  
pp. 57 ◽  
Author(s):  
James A. Ibers
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Carbon Disulphide ◽  
Carbonyl Sulphide

scholarly journals Investigations in the infra-red region of the spectrum. Part V.— The absorption spectrum of carbonyl sulphide

1932 ◽  
Vol 135 (827) ◽  
pp. 375-391 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Absorption Spectrum ◽  
Carbon Disulphide ◽  
Linear Structure ◽  
Potassium Thiocyanate ◽  
Gaseous Product ◽  
Infra Red ◽  
Glass Seals ◽  
Carbonyl Sulphide

The symmetrical linear structure of both carbon dioxide and carbon disulphide is now well established. Recent developments in theory make it highly probable that a complete explanation of the Raman and infra-red spectra of these substances, with the concomitant selection rules, will shortly be available. It is in the meantime of consequence to examine the absorption spectrum of carbonyl sulphide, since the chemical and external physical properties of this molecule are intermediate to those of the other two, though the lack of symmetry in its structure predicts more complex intramolecular relationships. No previous determination of this spectrum appears to have been made. Experimental . Carbonyl sulphide was prepared by dropping sulphuric acid (5 parts of acid to 4 of water by volume) on to potassium thiocyanate in a flask maintained at 21° C. by means of a water bath. The chief impurities generated in the reaction are carbon disulphide, carbon dioxide, and carbon monoxide* ; the gaseous product was led firstly through a trap immersed in a freezing mixture of salt and ice, secondly through a bubbler containing a 33 per cent, solution of potassium hydroxide, thirdly through a tube of active charcoal, fourthly through calcium chloride, and finally, through a trap immersed in a saturated solution of carbon dioxide snow in acetone, to the fume cupboard v en t; glass to glass seals were used throughout. The traps and tubes removed in succession the major portion of the carbon disulphide, the carbon dioxide, the remaining carbon disulphide, and the water vapour ; carbonyl sulphide boils at —50° C. and was condensed in the last trap at a temperature of —78°, any carbon monoxide passing on unabsorbed. When sufficient of the required substance had been collected, the trap was disconnected from the generating apparatus and connected to the absorption tube system, where the gas was transferred to an evacuated aspirator and stored over phosphoric oxide. The aspirator was totally enclosed to obviate possible decomposition of the carbonyl sulphide by light.

Kinetic study of the carbonyl sulphide synthesis from carbon dioxide and carbon disulphide on alumina catalysts

1990 ◽  
Vol 64 ◽  
pp. 143-159 ◽  
Author(s):  
L. Nemeth ◽  
G. Gati ◽  
A. Gervasini ◽  
A. Auroux ◽  
G. Mink ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Kinetic Study ◽  
Carbon Disulphide ◽  
Carbonyl Sulphide ◽  
Alumina Catalysts

The kinetically effective stoichiometry of reactions in the carbon-sulphur dioxide system

1973 ◽  
Vol 26 (4) ◽  
pp. 723 ◽  
Author(s):  
JD Blackwood ◽  
DJ McCarthy
Keyword(s):  
Carbon Dioxide ◽  
Sulphur Dioxide ◽  
Elevated Temperatures ◽  
Carbon Disulphide ◽  
Temperature Sensitive ◽  
Similar Temperature Dependence ◽  
Similar Temperature ◽  
Carbon Dioxide Reaction ◽  
Carbonyl Sulphide ◽  
Overall Reactions

The kinetically effective stoichiometry of reactions resulting from contacting carbon and sulphur dioxide at elevated temperatures involves the five overall reactions: 2C + 2SO2 → 2CO2 + S2 C+ S2 + CO2 → 2COS C+ 2COS → CS2 + 2CO C+ COz -, 2C0 C+S, -+ CS, The rates of the two reactions forming carbon disulphide are shown to have similar temperature dependence in the range 800-950�C, while the carbon-carbon dioxide reaction is shown to be more temperature sensitive than the carbon-carbonyl sulphide reaction in the same temperature range. The existence of parallel routes for carbon disulphide formation was detected by using a mechanistic argument to remove the redundancy in the system where carbon disulphide was concerned.

Carbon Dioxide-Mediated C(sp2)–H Arylation of Primary and Secondary Benzylamines

2018 ◽  
Author(s):  
Mohit Kapoor ◽  
Pratibha Chand-Thakuri ◽  
Michael Young
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Bond Activation ◽  
Bond Formation ◽  
Carbon Bond ◽  
Chelate Effect ◽  
Free Amine ◽  
Carbon Carbon Bond ◽  
New Strategy ◽  
Metal Catalyzed

Carbon-carbon bond formation by transition metal-catalyzed C–H activation has become an important strategy to fabricate new bonds in a rapid fashion. Despite the pharmacological importance of <i>ortho</i>-arylbenzylamines, however, effective <i>ortho</i>-C–C bond formation from C–H bond activation of free primary and secondary benzylamines using Pd<sup>II</sup> remains an outstanding challenge. Presented herein is a new strategy for constructing <i>ortho</i>-arylated primary and secondary benzylamines mediated by carbon dioxide (CO<sub>2</sub>). The use of CO<sub>2</sub> is critical to allowing this transformation to proceed under milder conditions than previously reported, and that are necessary to furnish free amine products that can be directly used or elaborated without the need for deprotection. In cases where diarylation is possible, a chelate effect is demonstrated to facilitate selective monoarylation.

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